|
GE Applies Variable Frequency to Improve Efficiency of Traditional Ship Propulsion Systems
5/16/2013 |
|
|
Reduces SFC (Specific Fuel Consumption) up to 15%
Enables the usage of conventional technology in an unconventional solution - reduces changes to existing topology
Drives down maintenance intervals and costs without increasing technology risks
PARIS - May 6, 2013 - GE's Power Conversion business (NYSE: GE) unveils a new power and propulsion system that reduces fuel consumption by controlling engine speed on platform support vessels at OTC. The Variable Frequency Active Front-End power and propulsion system, or VF-AFE, enables ship owners using conventional power system components to lower engine speeds when feasible, cut fuel consumption, and reduce emissions and maintenance requirements.
"We are increasing efficiency of existing technology for the benefit of our customers," says Paul English Marine Leader of GE Power Conversion. The VF-AFE system allows the use of conventional power system components (main switchboard drives, etc.), so learning how to operate it is relatively easy, and operators require minimal training. "Today, when you operate a conventional engine, its speed is always constant, whatever the load," English says. "So when the load is reduced, you are using more energy than you need, because the pistons continue to run at an unnecessarily high speed. This lowers your efficiency. The VF-AFE enables you to recover that lost efficiency."
When a support vessel is operating in DP mode, the load on the engines is reduced, just to counter the effect of wind and waves, but all engines are kept running in order to provide redundancy. This means that, if the power from one engine is lost, power is still available from the others to keep the vessel in position. This arrangement while effective is not the most efficient. With VF-AFE, all the engines remain connected, but their speed can be cut when the load is reduced.
"We have made a calculation based on specific operating conditions, assuming a fuel price of $900 per ton," says English. "We estimate that, with the engines loaded at 50% of rated load, for a full year, on a ship with 8 megawatts (MW) of installed power, operating for 300 days a year, 24 hours a day, the fuel savings could be up to $300,000 per year."
The active front end drives more than just the engine. Auxiliaries onboard the vessel still require a fixed frequency, so extra equipment will be needed to convert the variable frequency from the VF-AFE into a fixed frequency. This requires an additional investment by the customer, but even so, GE estimates that the return on the total investment is achieved in less than a year.
"This solution is unique to GE," says English. "We have looked at what can be done with existing technology that customers are using have engineered a way to make this existing technology, that a customer is comfortable with, more efficient."
The VF-AFE uses a version of GE Power Conversion's MV 3000 low voltage drive that has been modified to make it more compact. "This is another example of GE learning from experience and listening to its customers," says English. "Feedback from customers was that the footprint of the MV 3000 was rather large, so we have acted on their comments. Once again, we are maximizing existing technology. The MV 3000 for the VF-AFE is existing technology, repackaged."
As with other advanced systems that GE is introducing at OTC, VF-AFE systems will be Visor-enabled; which means that GE engineers will be able to monitor them remotely. "We will use Visor, not only for maintenance purposes for the direct benefit of customers, but also to improve our understanding of the benefits they are getting from VF-AFE, so that we can possibly make further improvements to it," says English.
GE will build a demonstrator for the VF-AFE at one of its marine technology centers. In the future, this will enable the company to show customers the benefits of DP operation under simulated. |
|
|
|
|
|
主站蜘蛛池模板：
国产资源视频|
裸身美女无遮挡永久免费视频
|
国产视频一区二区三区四区视频|
香蕉亚洲欧洲在线一区|
成人精品18|
在线观看美女网站大全免费|
久久久久亚洲AV成人网站软件|
精品亚洲国产探花在线播放|
综合色一色综合久久网|
国产成人亚洲日韩欧美|
亚洲AV无码精品一区二区三区|
天天模,夜夜模夜夜爽|
国产偷国产偷亚洲欧美高清|
亚洲成a人v电影在线观看|
亚洲AV色香蕉一区二区蜜桃小说|
av午夜福利亚洲精品福利|
久久久亚洲精品一区二区三区
|
人与禽的免费一级毛片|
国产精品自在拍首页视频|
日韩有码中文在线观看|
中文字幕乱码无码人妻系列蜜桃|
中文字幕第一页国产|
久爱免费观看在线精品|
精品无码黑人又粗又大又长|
国精品午夜福利视频不卡|
国产va在线|
亚洲伊人久久综合成人|
中文字幕久久精品波多野结百度
|
日韩av高清无码|
精品国产一区二区三区四区|
中文字幕日韩一区二区不卡|
激情五月久久|
日本福利一区二区精品|
五月婷婷中文字幕|
久久久精品94久久精品|
国产拍拍|
国产黄片一区视频在线观看
|
91碰在线视频|
无遮挡aaaaa大片免费看|
人妻精品综合?码|
亚洲男人的天堂精品一区二区
|
